Write a Python class definition called UtilityBill which represents a monthly electricity bill. A bill contains the following pieces of information:

customer name (default value is the empty string)

meter number (default value is 0)

number of kilowatt hours (kwh) used (default value is 0)

Include the following methods:

a constructor which given a customer name, meter number and the number of kilowatt hours used, creates a UtilityBill object (be sure to account for the default values)

an accessor method for each attribute

a mutator method for each attribute

a method which computes and returns the monthly charge. The charge is calculated as follows:

basic charge is $15.99

the first 0 to 1000 kwh (inclusive) is $0.0879 per kwh

kilowatt hours over 1000 kwh is $0.09719 per kwh

15% tax is to be added